Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A43: Strange Metals and Novel Transport Properties
8:00 AM–11:00 AM,
Monday, March 15, 2021
Sponsoring
Unit:
DCMP
Chair: Tarapada Sarkar, University of Maryland, College Park
Abstract: A43.00005 : Revealing a large temperature dependence of the Hall effect in the “non-metallic” metal FeCrAs*
8:48 AM–9:00 AM
Live
Presenter:
Benny Lau
(Univ of Toronto)
Authors:
Benny Lau
(Univ of Toronto)
Wenlong Wu
(Univ of Toronto)
Stephen R Julian
(Univ of Toronto)
Here, we report the temperature dependence of the classical Hall effect in FeCrAs. It is typically used to study the carrier density of a material, but it can also be used to investigate the scattering rate. We observe that there is a strong temperature dependence in the low-field Hall coefficient, RH. In particular, there is an anomaly when FeCrAs is near TN, and below this, there is a sign-reversal in RH when the field directed along the c-axis. This suggests that there is a strong relationship between the spin degree of freedom and the electronic scattering that is not captured by theoretical treatments.
*We acknowledge financial support from NSERC (RGPIN-2019-06446).
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